Biological Clock

Some women see babies and start to hear their biological clock ticking and they desperately want to have a baby. I know one woman who, when seeing a baby she thought was particularly cute, would exclaim "Oh, my ovaries!"
I can honestly say I have never felt that way about a human baby but show me a kitten or a puppy (or another cute baby animal) and I want one so bad my stomach hurts.
This is what inspired this post:
Oh, I want one so very much.